He'd wondered what it had tasted like, more times than he cared to count. He had drawn it several times recently, watching it's sometimes slow and sometimes fast decent down her creamy skin. That alone was fascinating enough; to watch it pulse from her veins and spill out onto her flesh, knowing he'd been the one to spill it. The noise it inspired was wonderful as well; sometimes he'd hear her scream, her voice ripping from her loud and desperate. Sometimes she would whimper, a small and vulnerable sound as she tried to hold in her pain. Another amazing thing about it was the scent; hot and metallic, full of iron and sugar and hormones that would go through his nose and straight to his brain. It would make it difficult to think, difficult to do anything but simply feel. In those moments he'd wondered desperately what it had tasted like. But she would often be curled up or hunched over in pain and defeat and he'd leave her that way. Not this time; this time, not only was her red essence spilling out onto her skin but she was allowing him gladly to it.

Today was a good day, one of the best Clara remembered for a good long while. After landing on a beautiful beach covered planet, the Doctor had worked with some locals who needed help repairing their space ship. It hadn't taken very long and they had spent the rest of the afternoon walking barefoot along the beach, the waves crashing over the skin of their feet and cooling them in the heat of the sun. Clara could still feel the sand between her toes, the sweat of the outdoors still wet in the hair on the back of her head. The Doctor had come up behind her, surprising her as he slipped his arms around her gently and pulled her into a hug. He'd laid his head on her shoulder and began to sway to the music that had begun to play in the TARDIS (Clara had always known the ship was sneaky). Clara had moved with him, enjoying the way she could feel his breath hot on her neck as he swayed with her. Her heart had begun to speed up every time she'd felt that hot little puff of air on her skin. When she'd felt his lips on her neck, it had taken her breath away. Her pulse began to beat harder in her neck, right where the Doctor's lips touched her. His hands had moved up and down her arms, giving her shivers through her jumper. She had turned so that she was facing him and let her lips meet his; this time he didn't have to push.

Again she'd ended up leaning up against the console; in less than a minute, she was sitting on top of button and levers, ignoring the discontented beeps of the ship in response. Desire coursed through her as his arms went around her, his nails skating across the skin of her back, the fabric of her shirt suddenly seeming to be a terrible hindrance. The Doctor's lips had moved along hers quickly, his teeth nipping occasionally. A sigh broke free from her when his lips moved away from hers and went to the sensitive skin on her neck; it turned into a gasp as she felt teeth bite and pull. It was hard enough to draw blood and though she thought about trying to stop him, she found that this time she didn't want to. Her head was swirling with the hormones and though it did hurt, a lot, it wasn't the same kind of pain. It was somehow a sweet pain, one she found herself enjoying.

The Doctor had not meant to bite hard enough to draw blood; his head was beginning to cloud the way that it did when his body began to be taken over by urges and the need for sensations and sometimes he got rough. He liked the way her skin felt between his teeth, the slightly sweet taste of her skin against his tongue. But this time he must have pulled a little too hard, bit a little too deep. He'd pulled back slightly at the sound of her gasp, one of mixed pain and pleasure. That's when he'd seen the small dot of red that was beginning to pop out of her skin. He watched it bead up on her skin, becoming a rounder and rounder dot before it gained enough volume to begin to run down her skin. It was such a small bit of blood but he still could smell it, feel it in his nose. It was a glorious, intoxicating scent, made even more incredible than usual by the high levels of hormones in her blood. He hesitated for a moment as he watched the blood run, taken away by the scent but was quickly brought aware of Clara's hands tight on his jacket, preventing him from moving away. He needed no coaxing.

The Doctor moved in again, his lips meeting her neck. His tongue protruded from his mouth and found the spot where the blood had stopped. He licked up along the path the blood had taken, relishing every morsel of it. It was everything he thought it might be; it was sweet, sweet as honey with touches of metallic hardness to it. The more it drifted along his tongue the more he sought. His tongue met the small, barely visible cut in the skin where it had originated and the Doctor put his lips over it, sucking for every last bit of the red nectar. Clara gasped as he pulled at the skin; one of her hands knotted in his hair, pulling hard enough to cause his scalp to be sore, her other hand tugging on his bowtie, ensuring that he wasn't going anywhere.

The Doctor sucked on the spot until it was red and sore, looking for it but the wonderful taste of Clara's life force was gone. He thought briefly about biting deeper into the skin to coax more of the delicious liquid to the surface; the way Clara was pulling on his hair, digging into his scalp as she moved her body against his in the most delicious of ways was enough to make him lose what little resolve he had left. He bit down on the irritated skin, earning a wonderful moan from Clara as a few more dots of blood flowed from her skin onto his lips, tasting sweeter each time it came to him. As he licked the blood from her velvety skin, he felt her mouth skirt along his ear, teasing him with her hot breath against him. It sent a shudder through him he couldn't stop and he ached for her lips on his skin as he tasted the previously forbidden part of her.

"You taste so good" he breathed heavily against her neck, his voice low and husky. He pulled her tighter to him, as tight as he could with their layers of clothing in the way. He'd see to it that those were not hindering them for too much longer but right now he didn't want to rush this moment.

Clara felt herself tremble under the Doctor's touch and at his breathy tone of voice. It was a strange thing, it should bother her; but it didn't. Though it hurt, Clara felt the desire rise in her to give him more of what he wanted. Wasn't it always so with them?

Clara placed her lips even closer to the Doctor's ear, a smile on them. "Want some more?" she asked, her own voice low and betraying her level of desire as much as her fragrant human hormones were.

In a second, somehow he found himself on top of her lying on the floor. Those bothersome clothes are still terribly in the way but he finds his bowtie lopsided, his jacket rumpled and her skirt pulled up much higher, revealing more and more skin. The Doctor looked down at Clara, her hair splayed out around her head like a halo, a smile on her lips as she looked up at him. Oh this is good…He felt a tremor run through his body at her words. She was not only his, but very willingly so. He stilled his primal urges, the one causing his trousers to seem so terribly tight now, as he sought to feed the other urge inside him. The one that tortured him at night, the one that called to him desperately when he tried to bury it; the urge for blood.

The Doctor smiled down at Clara, his hands on either side of her face. "Yes I do" he cooed as he grinned ear to ear. "My Impossible Girl…I will never get too much of you"

Clara grinned up at him, her breath as quick as his own. With her eyes locked on his, she tilted her head to the side, exposing the mark that had started off small but was soon to be bigger. With that need pressing deep into his brain, the Doctor plunged his lips over the cut and took the delicious red syrup, his tongue dancing with its taste as his ears hummed with the sound of her whimpers.